libs/ardour/process_thread.cc

   1 /*
   2     Copyright (C) 2010 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <iostream>
  21
  22 #include "ardour/buffer.h"
  23 #include "ardour/buffer_manager.h"
  24 #include "ardour/buffer_set.h"
  25 #include "ardour/process_thread.h"
  26 #include "ardour/thread_buffers.h"
  27
  28 using namespace ARDOUR;
  29 using namespace Glib;
  30 using namespace std;
  31
  32 static void
  33 release_thread_buffer (void* arg)
  34 {
  35         BufferManager::put_thread_buffers ((ThreadBuffers*) arg);
  36 }
  37
  38 Glib::Threads::Private<ThreadBuffers> ProcessThread::_private_thread_buffers (release_thread_buffer);
  39
  40 void
  41 ProcessThread::init ()
  42 {
  43 }
  44
  45 ProcessThread::ProcessThread ()
  46 {
  47 }
  48
  49 ProcessThread::~ProcessThread ()
  50 {
  51 }
  52
  53 void
  54 ProcessThread::get_buffers ()
  55 {
  56         ThreadBuffers* tb = BufferManager::get_thread_buffers ();
  57
  58         assert (tb);
  59         _private_thread_buffers.set (tb);
  60 }
  61
  62 void
  63 ProcessThread::drop_buffers ()
  64 {
  65         ThreadBuffers* tb = _private_thread_buffers.get();
  66         assert (tb);
  67         BufferManager::put_thread_buffers (tb);
  68         _private_thread_buffers.set (0);
  69 }
  70
  71 BufferSet&
  72 ProcessThread::get_silent_buffers (ChanCount count)
  73 {
  74         ThreadBuffers* tb = _private_thread_buffers.get();
  75         assert (tb);
  76
  77         BufferSet* sb = tb->silent_buffers;
  78         assert (sb);
  79
  80         assert(sb->available() >= count);
  81         sb->set_count(count);
  82
  83         for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
  84                 for (size_t i= 0; i < count.get(*t); ++i) {
  85                         sb->get(*t, i).clear();
  86                 }
  87         }
  88
  89         return *sb;
  90 }
  91
  92 BufferSet&
  93 ProcessThread::get_scratch_buffers (ChanCount count)
  94 {
  95         ThreadBuffers* tb = _private_thread_buffers.get();
  96         assert (tb);
  97
  98         BufferSet* sb = tb->scratch_buffers;
  99         assert (sb);
 100
 101         if (count != ChanCount::ZERO) {
 102                 assert(sb->available() >= count);
 103                 sb->set_count (count);
 104         } else {
 105                 sb->set_count (sb->available());
 106         }
 107
 108         return *sb;
 109 }
 110
 111 BufferSet&
 112 ProcessThread::get_mix_buffers (ChanCount count)
 113 {
 114         ThreadBuffers* tb = _private_thread_buffers.get();
 115         assert (tb);
 116
 117         BufferSet* mb = tb->mix_buffers;
 118
 119         assert (mb);
 120         assert (mb->available() >= count);
 121         mb->set_count(count);
 122         return *mb;
 123 }
 124
 125 gain_t*
 126 ProcessThread::gain_automation_buffer()
 127 {
 128         ThreadBuffers* tb = _private_thread_buffers.get();
 129         assert (tb);
 130
 131         gain_t *g =  tb->gain_automation_buffer;
 132         assert (g);
 133         return g;
 134 }
 135
 136 gain_t*
 137 ProcessThread::send_gain_automation_buffer()
 138 {
 139         ThreadBuffers* tb = _private_thread_buffers.get();
 140         assert (tb);
 141
 142         gain_t* g = tb->send_gain_automation_buffer;
 143         assert (g);
 144         return g;
 145 }
 146
 147 pan_t**
 148 ProcessThread::pan_automation_buffer()
 149 {
 150         ThreadBuffers* tb = _private_thread_buffers.get();
 151         assert (tb);
 152
 153         pan_t** p = tb->pan_automation_buffer;
 154         assert (p);
 155         return p;
 156 }